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AD7834BR bảng dữ liệu(PDF) 2 Page - Analog Devices

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AD7834BR bảng dữ liệu(HTML) 2 Page - Analog Devices

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Parameter
A
B
S
Units
Test Conditions/Comments
ACCURACY
Resolution
14
14
14
Bits
Relative Accuracy
±2
±1
±2
LSB max
Differential Nonlinearity
±0.9
±0.9
±0.9
LSB max
Guaranteed Monotonic Over Temperature
Full-Scale Error
VREF(+) = +7 V, VREF(–) = –7 V
TMIN to TMAX
±5
±5
±8
mV max
Zero-Scale Error
±4
±4
±5
mV max
VREF(+) = +7 V, VREF(–) = –7 V
Gain Error
±0.5
±0.5
±0.5
mV typ
VREF(+) = +7 V, VREF(–) = –7 V
Gain Temperature Coefficient
2
4
4
4
ppm FSR/
°C typ
20
20
20
ppm FSR/
°C max
DC Crosstalk
2
50
50
50
µV max
See Terminology. RL = 10 kΩ
REFERENCE INPUTS
DC Input Resistance
30
30
30
M
Ω typ
Input Current
±1
±1
±1
µA max
Per Input
VREF(+) Range
0/+8.192
+7/+8.192
0/+8.192 V min/max
VREF(–) Range
–8.192/0
–8.192/0
–8.192/0 V min/max
[VREF(+)–VREF(–)]
5/14
7/14
5/14
V min/max
For Specified Performance. Can Go as Low as
0 V, but Performance Not Guaranteed
DEVICE SENSE GROUND INPUTS
Input Current
±2
±2
±2
µA max
Per Input. VDSG = –2 V to +2 V
DIGITAL INPUTS
VINH, Input High Voltage
2.4
2.4
2.4
V min
VINL, Input Low Voltage
0.8
0.8
0.8
V max
IINH, Input Current
±10
±10
±10
µA max
CIN, Input Capacitance
10
10
10
pF max
POWER REQUIREMENTS
VCC
5.0
5.0
5.0
V nom
±5% for Specified Performance
VDD
15.0
15.0
15.0
V nom
±5% for Specified Performance
VSS
–15.0
–15.0
–15.0
V nom
±5% for Specified Performance
Power Supply Sensitivity
∆Full Scale/∆V
DD
110
110
110
dB typ
∆Full Scale/∆V
SS
100
100
100
dB typ
ICC
0.2
0.2
0.5
mA max
VINH = VCC, VINL = DGND
3
3
3
mA max
AD7834. VINH = 2.4 V min, VINL = 0.8 V max
6
6
6
mA max
AD7835. VINH = 2.4 V min, VINL = 0.8 V max
IDD
10
10
15
mA max
AD7834. Outputs Unloaded
15
15
15
mA max
AD7835. Outputs Unloaded
ISS
10
10
15
mA max
Outputs Unloaded
–2–
REV. A
AD7834/AD7835–SPECIFICATIONS
(VCC = +5 V ± 5%; VDD = +15 V ± 5%; VSS = –15 V ± 5%; AGND =
DGND = 0 V; TA
1 = T
MIN to TMAX, unless otherwise noted)
(These characteristics are included for Design Guidance and are not
subject to production testing. )
AC PERFORMANCE CHARACTERISTICS
Parameter
A
B
S
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Output Voltage Settling Time
10
10
10
µs typ
Full-Scale Change to
±1/2 LSB. DAC Latch Contents
Alternately Loaded with All 0s and All 1s
Digital-to-Analog Glitch Impulse
120
120
120
nV-s typ
Measured with VREF(+) = VREF(–) = 0 V. DAC Latch
Alternately Loaded with All 0s and All 1s
DC Output Impedance
0.5
0.5
0.5
Ω typ
See Terminology
Channel-to-Channel Isolation
100
100
100
dB typ
See Terminology; Applies to the AD7835 Only
DAC to DAC Crosstalk
25
25
25
nV-s typ
See Terminology
Digital Crosstalk
3
3
3
nV-s typ
Feedthrough to DAC Output Under Test Due to
Change in Digital Input Code to Another Converter
Digital Feedthrough – AD7834
0.2
0.2
0.2
nV-s typ
Effect of Input Bus Activity on DAC Output Under Test
Digital Feedthrough – AD7834
0.1
0.1
0.1
nV-s typ
Output Noise Spectral Density
@ 1 kHz
40
40
40
nV/
√Hz typ All 1s Loaded to DAC. V
REF(+) = VREF(–) = 0 V
NOTES
1Temperature range is as follows: A Version: –40
°C to +85°C; B Version: –40°C to +85°C; S Version: –55°C to +125°C.
2Guaranteed by design.
Specifications subject to change without notice


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